Malicious PDF — malware analysis report

Static analysis result for SHA-256 3e5623e4c68b14ee…

MALICIOUS

PDF

46.0 KB Created: 2020-08-04 03:58:20 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 9219a233e3107b7fb84d28b40ee243b4 SHA-1: ff9a702c279e31c288c1944f740e984bf1ff0714 SHA-256: 3e5623e4c68b14ee061d2788411a182791cca14d07fce7749a2092a0a23d2f69
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF file contains numerous embedded links, with one specifically identified as a malicious redirector. The document body, though heavily obfuscated, contains text related to 'college bonafide certificate pdf' and the malicious URL, suggesting a social engineering lure. The presence of a link farm further indicates an attempt to distribute malicious content or SEO manipulation.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
    PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL https://ttraff.cc/pify?keyword=college+bonafide+certificate+pdf In PDF document text
    • http://files.reisbordsclass.com/uploads/1/3/0/8/130874012/3f74f64b9.pdfIn PDF document text
    • http://files.woburnxctrack.com/uploads/1/3/1/4/131482954/joliva-madetazitiwatoj.pdfIn PDF document text
    • http://files.pp-distribution.com/uploads/1/3/0/7/130740166/sanezade.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/4648/5672/files/getokalazuluvux.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/5042/5750/files/30155526088.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/3902/2485/files/bovejiwinumaputivapedexax.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/4953/4111/files/supofozavu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/8050/6785/files/microplastic_pollution_in_table_salts_from_china.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/0500/8293/files/91224367941.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/3581/9173/files/68988331114.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9427/8293/files/savonigewef.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6028/0982/files/kowes.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/2903/5158/files/vegavobimolutuvabu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/1257/0783/files/10418855811.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/9513/7187/files/etc_hosts_windows.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8894/5064/files/blockchain_explication_technique.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Related samples 3

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000077bc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x77BC 5192 bytes
SHA-256: 0568c65757f5f780276ceded4d022067d2a741b05b00136306b9c283d3b1e467
font_01_sfnt_off0000896f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x896F 9896 bytes
SHA-256: e295b28f969f01121ef30760a5ecf91f21d927ae0b454bdc8a90b64ef2fe1c1f

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